I'm not sure what you are trying to do but you might want to look at drawBackgroundAndSetScrollRect() in RichEditableTextContainerManager. This draws a background. You can use the backgroundColor and backgroundAlpha styles to control the color of the background.
Carol On 11/20/12 1 :50PM, "Federico Jakimowicz" <polacof...@outlook.com<mailto:polacof...@outlook.com>> wrote: Well, I have managed to make my custom background to be invoked by the framework, However I'm having a tough time calculating the height of the background to cover all the space between two lines. Specially when lines have different sizes and using lineHeight in the style. How can I get the space between two textlines? I mean the line totalHeight + any other space TLF or Flex adds between the lines. Background alignment starts geting uggly when I add styles like: { lineHeight:"120%"; leadingModel:box; dominantBaseline:auto; baselineShift:-4; alignmentBaseline:useDominantBaseline; } maybe my styles are wrong > From: polacof...@outlook.com<mailto:polacof...@outlook.com> > To: flex-dev@incubator.apache.org<mailto:flex-dev@incubator.apache.org> > Subject: RE: TLF2 Background manager > Date: Thu, 15 Nov 2012 10:39:51 -0300 > > I will take a look at it and let you know. > thanks Alex! > > > From: aha...@adobe.com<mailto:aha...@adobe.com> > > To: flex-dev@incubator.apache.org<mailto:flex-dev@incubator.apache.org> > > Date: Wed, 14 Nov 2012 07:57:00 -0800 > > Subject: Re: TLF2 Background manager > > > > Well, once you see "tlf_internal" (or mx_internal, for that matter), that > > implies that there isn't official support. > > > > I'm not the expert in this code, but in a quick grep of it, it looks like > > you can assign a backgroundManager to the textFlow. IIRC, there is logic > > that chooses which Factory to use for textlines and maybe you want to figure > > out how to control that so it doesn't use TextFlowTextLineFactory and one of > > the other ones that might honor the textFlow's backgroundManager, or maybe > > it is just a bug and the factory should be checking for and using the > > textflow's backgroundManager. > > > > > > On 11/14/12 6:40 AM, "Federico Jakimowicz" > > <polacof...@outlook.com<mailto:polacof...@outlook.com>> wrote: > > > > > Hi, > > > I have been trying for quite a while to setup a custom BackgroundManager > > > by > > > specifiying a customFlowComposerClass that extends StandardFlowComposer > > > and > > > provides me with a custom BackgroundManager.I expected that when the > > > textflow > > > invokes : > > > TextFlow#tlf_internal function getBackgroundManager():BackgroundManager{ > > > if > > > (!_backgroundManager && (flowComposer is > > > StandardFlowComposer)) _backgroundManager = (flowComposer as > > > StandardFlowComposer).createBackgroundManager() return > > > _backgroundManager;} > > > it retrieves my custom backgroundmanager from my custom flowcomposer. > > > However when rendering the text the TextFlowTextLineFactory seems to get > > > it's > > > own FlowComposer which in turn has it's own configuration and > > > backgroundmanager. ( Check > > > TextFlowTextLineFactory#createTextLinesInternal ) > > > I'm really having a nightmare with this. I know I can draw in the > > > background > > > directly and without using the BackgroundManager however since the > > > framework > > > seems to allow the developer to customize it's configuration I really > > > believe > > > that using the configuration is the real way to go. I think TLF should be > > > easy > > > to customize and that it was done with that in mind.Does someone has a > > > way to > > > go through this? > > > Another alternative could be downloading the source of TLF and creating > > > my own > > > version of the library in one hand that would be an overkill and in the > > > other > > > hand I don't know how to build the TLF library project (if someone could > > > provide some tutorial on how to do it would be cool too). > > > thanks in advance, > > > Polaco. > > > > > > > > > > > > > > > > > > > -- > > Alex Harui > > Flex SDK Team > > Adobe Systems, Inc. > > http://blogs.adobe.com/aharui > > >
